摘要
以临兴地区石盒子组2段和7段砂岩地层为目标,利用直径25mm岩心柱塞,根据现场测试资料控制柱塞温度、围压、柱塞出口压力,评价地层压力对砂岩两层合采产能的影响,为临兴地区砂岩两层合采接替时机的优选提供实验数据。研究表明,随H2段砂岩柱塞合采接替压力由14.98MPa降至9.58MPa,H2段与H7段柱塞单层干扰指数均先增后减,接替压力为12.05MPa时,两个砂岩单层干扰指数最高,分别达9.20%和14.54%。接替压力最大时,干扰程度最低。建议现场选择地层打开初期作为接替时机。
Aim at Shihezi Formation 2th section and 7th section sandstone formation in Lin Xing area, take experiment with the core plunger which the diameter is 25 mm. Based on the field test data, the plunger temperature, confining pressure and plunger outlet pressure were used to evaluate the formation pressure on the sandstone two- layer mining. The results were as follows： The effect of production capacity for the Linxing area sandstone two layers of mining success time to provide experimental data. The results show that the replacement pressure of the sand column with H2 is reduced from 14.98MPa to 9.58 MPa, and the single layer interference index of H2 and H7 is increased first and then decreased. When the replacement pressure is 12.05 MPa, the two sandstone monolayers The interference index was the highest, reaching 9. 20% and 14. 54% respectively. When the maximum pressure is taken, the degree of interference is the lowest. It is recommended to select the formation at the beginning of the formation as a successor.
出处
《非常规油气》
2017年第1期63-66,共4页
Unconventional Oil & Gas
基金
国家科技重大专项课题"三气"合采钻完井技术与储层保护(编号:2016ZX05066002-001)资助
关键词
砂岩气
两层合采
地层压力
模拟实验
层间干扰
tight sand gas
multiple zones commingled production
formation pressure
experimental simulation
interlamination interference
